The 51-year-old, who was part of Croatia's 1998 World Cup squad that finished third in France, comes with an experience of over 18 years in coaching, structuring, and developing football and players back home, and internationally.
With no clear sense of direction being set by Deschamps' selections, it may be up to the players to find their own way to deal with Messi.
Croatia have no major injury concerns going into Sunday's World Cup final despite having played three 120-minute matches
World Cup: When wingers gave Croatia flight
Croatia ruthlessly exposed England's limitations in the second half of the World Cup semi-final on Wednesday as Zlatko Dalic's side fought back to secure a famous 2-1 extra-time victory.
England, appearing in their first semi-final since 1990, had looked on course for their first final since 1966 as they led through Kieran Trippier's fifth-minute free kick and totally dominated the opening half.
Draxler makes PSG debut as holders advance into French Cup last 32
Substitute Ricardo Quaresma turned in three minutes from the end of extra time as Portugal edged a tense encounter to book a UEFA Euro 2016 quarter-final date with Poland. After 116 minutes in which the teams failed to muster a single shot on target, Ivan Perisic headed against the upright.
A guide to the Croatia starting 11 ahead of the World Cup final against France.
Croatia edged closer to next year's World Cup with an emphatic 4-1 home win over Greece on Thursday in the first leg of their two-legged playoff.